Oops, it doesn't look like 'shut the fuck up day' is a national day..

Other days

Ponytail Day

Chocolate Milkshake Day

Pampering Day

Frozen Yogurt Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Stress Awareness Day

Fiancee Day

Ride The Wind Day

Buddy Day

Raise Awerness Of Zeus Day